A weighted ovoid inside a sphere to practice joint position sense of the wrist

The science of wrist proprioception rehabilitation has grown exponentially as an area of research over the last 15 years with an advancing understanding that the wrist ligaments are rich in proprioceptors, which provide information to the brain on joint position, joint motion (kinesthesia), muscle force, touch, and body control.1 Sensorimotor rehabilitation has been proposed to enhance wrist stability and function after scapholunate and lunotriquetral injuries,2 wrist fractures, and osteoarthritis to the first carpometacarpal joint.